Nuckelavee

A giant monster with all its muscles showing. Has long arms and just one of its eyeballs [sic] is 1m in diameter. Can also shoot blasts of heat from its organs to attack opponents.
--Vita version bestiary

Fighting Nuckelavee

Nuckelavee, nicknamed "Jackrabbit" by the La-Mulana community, is an armored bipedal lobster-like cyclops. It is the Sub-Boss of Spring in the Sky.

The nuckelavee is a sea monster from Orkney Island folklore, appearing as a one-eyed, skinless (but not sinew-less or vein-less) horse with finned hooves and the upper body of a monstrous man attached to its back. Apparently enraged by the smell of kelp being dried or burned, it will attack and plague anyone it sees, but cannot bring itself to cross even a stream of fresh water.